When the popular game show ""Who Wants to Win a Bunch of Money?"" comes to the town of Onion Falls it seems like the perfect oppurtunity for straight-A student Keo to use his knowledge to win some cash. Unfortunately, Keo is terrified of…
Yakkity finds out that his grandfather Yardly Yak was a champion grass-eater who was cheated out of a first place trophy by a rival known as The Cowinator. Granny persuades Yakkity to challenge Cowinator to a grass-eating contest and…
Professor Crazyhair introduces Penelope, a robot daughter he created to assist him in his lab. When Penelope displays a lack of social skills Lemony decides to teach her how to act like a regular teenage girl. Soon Penelope is shopping at…
Keo's dad has plans to compete with his son in Onion Fall's annual picnic so that they can beat Yakkity and Mr. Highpants, who were the previous year's winning team. Keo fears that his father will only embarass them since his father is…
After scoring high grades on a test at school Yakkity, Keo and Penelope are invited to a special camp. Yakkity is excited about going to camp with his friends until he finds out that the camp is actually for smart kids who study science…
Yakkity's manager Mr. Trilobyte loses his office after he ends up going broke because he spent all his money on sweepstakes tickets. When Yakkity drops by to pay Mr. Trilobyte the 10% he owes him from his last stand-up comedy gig…
The kids decide to work on a movie for the Onion Falls Video Fest but they can't agree on what kind of movie to do so they split up into groups. Yakkity and Lemony decide to work on a comedy about hidden camera pranks while Keo and…
Keo and Lemony worry after Yakkity fails to show up and perform at a kids' birthday party and at the school's football game. When they look for Yakkity they find him on top of the water tower with a giant pimple. They discover that…
Yakkity learns hypnotism and decides to use it to get people to laugh at his comedy but his plan backfires when the whole town laughs at every single thing that he says.
Yakkity decides to add a ventriloquism dummy to his comedy act but it only becomes a hit when a nasty worm inhabits the puppet and starts doing the talking.
Yakkity, seeking some freedom, decides to srike out on his own and move into a nearby treehouse. But when Granny rents out Yakkity's old room he soon becomes suspicious of the new tenant.
After breaking into Professor Crazyhair's lab and causing a mess Yakkity and Keo are forced to do some house cleaning as their punishment. While cleaning, the boys end up in an even bigger mess when they lose one of the professor's more…
After Yakkity worries Granny by coming home late, she decides to keep track of him by giving him a large mobile phone. Meanwhile, Rondo tries to figure out a way to win a fighting robots competition.
Yakkity is charged a fine when the library realizes that he hasn't returned a book called ""Darn-it Dog"" which he checked out over 10 years ago. Rather than pay the fine or give back his favorite book, Yakkity lies and claims that he…
In order to keep from losing his position as one of Mr. Trilo's clients, Yakkity promises the agent that he can organize a huge entertainment event called Yakstravaganza. And to pull it all off Yakkity seeks the help of former…
A big hair mistake leads Yakkity to don a bad perm. He tries to make the best of the situation until the hair style begins to take on a life all its own.
After a football accident leaves Yakkity's antlers bent out of shape Granny tries to get them fixed by getting him antler braces. Yakkity then becomes the most popular guy in town when his braces begin to act as a satellite that picks up…
Keo tries to impress Lemony by getting over his fear of public speaking and running for class president. But Keo's plans to improve the school don't turn out as expected thanks to some support from campaign manager Yakkity.
Yakkity winds up on TV and unwittingly predicts the weather correctly. Impressed with the correct prediction, the TV station decides to make Yakkity it's new weather yak unaware that his prediction came to him courtesy of Granny's foot…
Yakkity and Keo fear the worst when Keo's Dad is nowhere to be found. The two search for the missing pineapple only to find themselves with no clues and an entire town full of strangely suspicious residents.
Yakkity becomes jealous when Keo gets a new pet so he decides to order his own pet and what he gets is a snakehead fish that can live outside of water. Yakkity grows close to the fish but Keo warns that the snakehead fish is a wild animal…
Yakkity's irresponsible scooter driving causes an accident which leaves Chuck Damage with amnesia. Lemony tries to help Chuck but Yakkity worries that she'll help the wrestler remember his sensetive side instead of his destructive side.
Yakkity, Keo and Lemony are teamed together on a school project designed to help the town smell better. Lemony completely takes over the project when she decides to make use of some discarded oil by turning into a new lemon-scented…
Yakkity is embarassed by a new hat that Granny made for him but eventually the hat becomes a popular fashion trend and Yakkity is credited as the creator. When the hat frenzy dies down Yakkity partners up with Keo and Mr. Highpants so…
Yakkity decides to build a float of his own for the annual parade when the town fails to recognize his comedic hero.
Trilo has Yakkity fill in for Wanda at a children's birthday party. When Rondo catches sight of Yakkity, dressed up as Wanda, he instantly falls for for the yak and invites him to a party as his date.
Yakkity begins to believe that he's special when he discovers that yaks are endangered and everyone starts treating him differently.
Yakkity and Keo come up with their very own sport and name it Yakeo which becomes popular with everyone except football jock Rondo.
After firing Mr. Trilo, Yakkity joins the sneaky Max Dewey and his circus.
Mr Highpants must attend a Confectionery Convention. He asks Yakkity and Keo to look after his hi-tech home, warning the boys not to touch any buttons ... and only to feed Mr Littlepants "Chimp-Chow".
Yakkity's cousin Jasper is a cute yak with a natural stand-up comedy style. But Yakkity becomes envious and ruins Jasper's show.
When Professor Crazyhair's experiments in the basement blow up the dining room a second time, Granny Yak evicts him from the house.
Keo, Keo's father and Yakkity go camping, but seem to forget to pack vital items. At least Yakkity brings some marshmallows.
Granny Yak has a new boyfriend - Chatterbox Ox, but Yakkity is suspicious, and Professor Crazyhair tries to win back Granny's affections.
A secret swimming hole becomes an amusement park.
Yakkity still loves Sharing Bear - the children's TV presenter, but Keo and Lemony think he is for babies.
When Chuck Damage becomes Yakkity's personal trainer, Yakkity begins to use him as his body guard. However how will Chuck Damage fare against The Cement Mixer?
Yakkity and Keo leave school to be taught by Keo's father.
A soapbox race is announced, and the prize is a year's supply of Professor Crazyhair's Egg Salad. When Lemony forms a team with Keo, Yakkity eventually pairs with a peculiar new neighbour.
Professor Crazyhair gives Lemony a high grade for her science project, but Keo believes that flattery had a lot to do with it.
Everything is going right for Yakkity. Is it because of the underpants he has been wearing since last Tuesday?
The Onioneers are on winter camp, and Lemony is hoping to win all of the merit medals. But she and Mr. Highpants get stuck on top of Mt. Onion. Now Yakkity, Keo and Wanda must save them.
When Granny Yak moves to a nursing home, Yakkity moves in with her.
It is All Onions Eve, and the children of Onion Falls are getting ready to leave their boots of onion soup out over night for the Snow Cow to replace with chocolate milk. However Yakkity's friends no longer believe in the Snow Cow...
Granny Yak is having surgery done on her antlers and Keo has Pineapple Pox, so Yakkity has a sleepover at Lemony's place. There he discovers some embarrassing secrets about Lemony's brother Rondo. When he reveals all at school, Yakkity…
Yakkity becomes a bike-riding ice cream salesman. But he starts eating all the merchandise (which counts as stealing) in order to get free stuff.
Keo and Yakkity find work in a video shop. Yakkity recommends all of Jackie Pachyderm's funny films, except for A-Pach-Alypse Now.
A robber is stealing from homes by blowing bubblegum bubbles and floating up to upstairs windows. Trilo is suspected, but is he really the Bubblegum Bandit?
Things go wild in Onion Falls after Yakkity receives the Jackie Pachyderm Practical Joke box, but someone else knows a few good practical jokes.
Keo is embarrassed by his old bike, but his father won't let him spend his film school money on a new one. With poor finances, will the family have to move to freezing Bergville?
Yakkity keeps putting off study for a biology test due the next day. However, an educational animation video featuring Alan Amoeba helps teach Yakkity about cellular replication.
When Grandma Yak turns against modern conveniences, Yakkity has to sneak off to the Techno-seum with his science class.
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